Bicycle Path Design
Our intent is to provide you with clear, concise guidance when designing a bicycle path or trail which is financed with federal or State Aid funds.
On-road bike standards for State Aid projects are included in State Aid Rule 8820.9941 Minimum Design Standards: On-Road Bicycle Facility for Urban; New or Reconstruction Projects and 8820.9951 Minimum Design Standards, On-Road Bicycle Facilities for Urban; Reconditioning Projects.
Off-Road Bikeway, Shared-Use Trail or Path
If you are designing an off-road bikeway on State Aid projects, the shared-use trail or path standards shown in State Aid Rule 8820.9995 Minimum Bicycle Path Standards must be met.
When design elements are not covered by State Aid Rules, State Aid recommends that the designer follow the MnDOT Bikeway Facility Design Manual and its associated website updates. While this document covers many issues, there are some design elements which differ within this manual.
Designers should be aware of the following bikeway guidelines:
|Design Elements||State Aid Standards and Guidelines
(Standards are in RED)
4.5 ft (54”) on bridges
3.5 ft (42”) when railing is constructed adjacent to steep slopes
Maximum 2 percent cross slope
|Vertical Curves||The stopping sight distance must be calculated to determine vertical curves. For examples see the charts for 20 mph (PDF) and 30 mph (PDF).|
|Horizontal Curves||74 ft minimum radius (20 degree lean angle)
Using calculated minimum horizontal radius of curvature based on lean angle (MnDOT BFDM, Exhibit 5-6)
8 ft minimum for a two-way (10 ft desired)
5 ft minimum for a one-way
|Shoulder/Clear Zone||2 ft from the edge of the travel lane*
|In-slope||Maximum 1:2 (rise:run)|
10 ft nominal *
8 ft nominal if passage of emergency or maintenance vehicles are not required
*Additional 8820.9995 notes apply
Traffic control devices (signs and pavement markings, etc.) shall be installed in accordance with the Minnesota Manual on Uniform Traffic Control Devices (MnMUTCD).
If a project is being constructed and paid for using state aid funds (including the match to federal funds) and if requirements in a State Aid Rule cannot be met, a variance (PDF) is required. If a project is being constructed and paid for using federal funds and if requirements in a State Aid Rule cannot be met, a design exception (PDF) is required. Please contact Sulmaan Khan at Sulmaan.Khan@state.mn.us or 651-366-3819 for further guidance and assistance.